EF缩写的意思

AP ETE GDPS SSM DFOS DTP GPS EWT APARS UMTS DL SOC CPS IOB RAID CC SSG DPON RIP MADP EFCI Bps FED QDOS ABDL CRC EAF S3 CTDM mcu EELS CNCC CSE AJG DVVI DVC AFC CAI NCBA EEROM GIMM STB IS-IS DS ASI CPM DTD FCN APADAS DCN ASC ESC DFSK EF NDS IM CICS SFB DCT ppm